Millicontact impedance spectroscopic analysis in stabilized zirconia and gadolinia-doped ceria

Jong Heun Lee, Doo Kang Kim, Doh Yeon Kim

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    The spatially-resolved local impedance can be measured by 'Millicontact Impedance Spectroscopy (MIS)', which involves the use of an array of sub-millimeter-scale electrodes. In stabilized zirconia and gadolinia-doped ceria electrolytes with highly resistive grain-boundaries, MIS could measure the local impedance precisely and revealed the spatially-resolved changes in the grain-interior and grain-boundary resistivity. The validity of this technique was illustrated using the examples such as the design of a new scavenger material and an analysis of the diffusion of the siliceous phase along the grain boundary.

    Original languageEnglish
    Pages (from-to)966-970
    Number of pages5
    JournalSolid State Ionics
    Volume179
    Issue number21-26
    DOIs
    Publication statusPublished - 2008 Sept 15

    Keywords

    • Gadolinia-doped ceria
    • Grain-boundary conduction
    • Local impedance
    • Millicontact Impedance Spectroscopy
    • Stabilized zirconia

    ASJC Scopus subject areas

    • General Chemistry
    • General Materials Science
    • Condensed Matter Physics

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